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What is the difference between linear regression and logistic regression?
...ic regression is used when the response variable is categorical in nature. For instance, yes/no, true/false, red/green/blue,
1st/2nd/3rd/4th, etc.
Linear regression is used when your response variable is continuous. For instance, weight, height, number of hours, etc.
Equation
Linear regression ...
Getting an empty JQuery object
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Upvoted for the included source. Always great to have all the context available. A more direct link to the related paragraph would be: api.jquery.com/jQuery/#returning-empty-set
– ksadowski
Jun ...
In STL maps, is it better to use map::insert than []?
...rite
map[key] = value;
there's no way to tell if you replaced the value for key, or if you created a new key with value.
map::insert() will only create:
using std::cout; using std::endl;
typedef std::map<int, std::string> MyMap;
MyMap map;
// ...
std::pair<MyMap::iterator, bool> res...
UTF-8 byte[] to String
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Look at the constructor for String
String str = new String(bytes, StandardCharsets.UTF_8);
And if you're feeling lazy, you can use the Apache Commons IO library to convert the InputStream to a String directly:
String str = IOUtils.toString(input...
How to include() all PHP files from a directory?
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foreach (glob("classes/*.php") as $filename)
{
include $filename;
}
share
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improve this answer
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What are the advantages of NumPy over regular Python lists?
...d writing items is also faster with NumPy.
Maybe you don't care that much for just a million cells, but you definitely would for a billion cells -- neither approach would fit in a 32-bit architecture, but with 64-bit builds NumPy would get away with 4 GB or so, Python alone would need at least abou...
Convert SVG image to PNG with PHP
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That's funny you asked this, I just did this recently for my work's site and I was thinking I should write a tutorial... Here is how to do it with PHP/Imagick, which uses ImageMagick:
$usmap = '/path/to/blank/us-map.svg';
$im = new Imagick();
$svg = file_get_contents($usmap);
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Handlebars.js Else If
I'm using Handlebars.js for client side view rendering. If Else works great but I've encountered a 3 way conditional that requires ELSE IF:
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Mercurial .hgignore for Visual Studio 2008 projects
What is a good setup for .hgignore file when working with Visual Studio 2008?
7 Answers
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Are duplicate keys allowed in the definition of binary search trees?
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Many algorithms will specify that duplicates are excluded. For example, the example algorithms in the MIT Algorithms book usually present examples without duplicates. It is fairly trivial to implement duplicates (either as a list at the node, or in one particular direction.)
Most (...